CN104945741A - High-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material and preparation method thereof - Google Patents
High-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/24—Crystallisation aids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/10—Peculiar tacticity
Abstract
The invention relates to a high-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material and a preparation method thereof. The invention is characterized in that the high-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material is prepared from the following raw materials in percentage by weight: 50-80% of polypropylene, 2-15% of graft compatilizer, 10-30% of glass fiber chopped felt, 3-10% of elastomer toughener and 0.5-10% of compound crystal nucleator. In order to solve the problem of poor low-temperature toughening effect in the traditional elastomer, nucleators and auxiliary nucleators for different crystal forms are compounded to regulate the crystal structure and content of the base phase and interface phase in the polypropylene composite material, thereby improving the normal-temperature/low-temperature impact property (especially notch impact property at the low temperature of lower than -30 DEG C) of the reinforced polypropylene composite material on the premise of avoiding over reduction of the rigidity of the composite material. The performance testing indicates that the retentivity of the normal-temperature stretching and bending strength of the modified composite material is 90% above, the low-temperature (-40 DEG C) notch strength can be enhanced by 80-120%, and the comprehensive properties are obviously better than those of the conventional elastomer toughened modified material.
Description
Technical field
The present invention relates to the technical field of macromolecular material, glass fiber reinforced polypropylene composite material that specifically a kind of high-impact is low temperature resistant and preparation method thereof.
Background technology
Polypropylene is one of maximum general-purpose plastics kind of current consumption, it has the price of comparatively balanced over-all properties, excellent chemical resistant properties, good processing fluidity and relative moderate, is thus able to be able to a large amount of use at industrial circles such as automobile, electrical equipment, building materials.But, the defect of polyacrylic structure and aspect of performance is also fairly obvious, due to existence and the regular distribution of pendant methyl in molecular chain, the easy orientation of its polymer molecular chain is piled up, material crystalline proneness is strong, but crystallisation process is slow, and crystalline structure is various and defect level is higher, thus adverse influence is produced to the mechanical property of polypropylene and matrix material thereof especially low-temperature impact performance.
Under the lightweight tendency influence of current " to mould Dai Gang ", in small-sized household passenger car, some secondary force-bearing property structural parts such as important structural elements such as front end frame, instrument board framework, vehicle door interior trim panel, centre gangway skeleton, skylight sash progressively adopt high performance glass fiber reinforced polypropylene composite material to be base material.Along with the continuous increase of extreme weather in recent years, require also progressively to improve to the high and low temperature resistance of trolley part, in the area of some extreme low temperatures, temperature even can explore downward to-40 DEG C and even lower, and the second-order transition temperature T of traditional olefin type elastomer toughner
galso only between-30 ~-40 DEG C, this just shows at lower temperatures, elastomeric toughening effect progressively will weaken and even disappear, and virtually improve the risk of component failure, and this just needs the mode seeking a kind of improvement polypropene impact-resistant performance completely newly in traditional toughness reinforcing mode.
Summary of the invention
Glass fiber reinforced polypropylene composite material that the object of the present invention is to provide a kind of high-impact of improvement low temperature resistant and preparation method thereof, it can overcome the some shortcomings of the especially low-temperature impact performance difference of mechanical property in prior art.
To achieve these goals, technical scheme of the present invention is: the glass fiber reinforced polypropylene composite material that a kind of high-impact is low temperature resistant, it is characterized in that: described matrix material, the weight percent of each composition as follows:
The weight percent sum of above-mentioned each composition is 100%, and wherein Hybrid Nucleation Agent is β type nucleator and whisker is composite forms.
Further, described polypropylene is the one of co-polypropylene or mixture of more than two kinds, fusing point between 220-275 DEG C, molding shrinkage between 1.0-1.5,230 DEG C, under the test condition of 2.16Kg, its melting index is 3-20g/min.
Further, described grafts compatilizer is glycidyl methacrylate GMA graft polypropylene compatilizer, its percentage of grafting is 0.5-2% through chemical titration test, by twin screw extruder, cause GMA/ vinylbenzene St mixture grafting molten state polypropylene by peroxide initiator and obtain.
Further, described short glass fiber is short, and to cut felt be that continuous glass fibre folded yarn is short cuts rear gained, and its filament diameter is 13um, and chopped length is 3-4.5mm.
Further, described elastic body toughening agent is olefin type elastomer POE, and its density is 0.860-0.880g/cm
3, fusing point is between 55-70 DEG C, and shore hardness (A) is at 68-83, and modulus in flexure is 12-28Mpa, 190 DEG C, under the test condition of 2.16Kg, its melting index is 0.5 ~ 10g/min.
Further, Hybrid Nucleation Agent is that β type nucleator and whisker form in the ratio of 1:6 ~ 1:10 is composite, wherein said β type nucleator is carboxylic acid metal's salt nucleator, the one of substituted benzene amides nucleator, rare earth compounding nucleator or two or more mix; Described whisker is potassium titanate crystal whisker, the one of magnesium salt whisker, aluminium borate whisker or two or more mix.
Prepare the method for the low temperature resistant glass fiber reinforced polypropylene composite material of high-impact simultaneously, comprise the following steps:
A, take polypropylene, grafts compatilizer, elastic body toughening agent, Hybrid Nucleation Agent and processing aid by described weight percent, mix, obtain mixing raw material;
B, dried mixing raw material is positioned in the main feeding bin of tight meshing co rotating twin screw extrusion, join in the machine barrel of forcing machine through feed screw, short for glass felt of cutting is joined forcing machine from side spout, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is 250 revs/min, through melt extruding, cooling, granulation, obtains product after the operation such as drying and processing.
During use, the reinforced polypropylene compound material that the present invention is prepared by technical scheme of the present invention, polyacrylic heterogeneous nucleation agent is selected by specific aim, promote polyacrylic crystallisation by cooling speed, improve the textural defect of crystal, improve emphatically the structural content of beta crystal in polypropylene composite material, and improve the interface scorching situation caused because of the one-dimension oriented characteristic of fiberglass reinforced body, ensure that matrix material is when being subject to plus load effect and transmitting, the tiny crack produced effectively can be stopped by the crystalline structure of matrix and interfacial layer, thus promote the shock resistance of polypropylene composite material, and with the toughness reinforcing mode difference of traditional olefin type elastomer be, this adjustment by crystalline structure and realize toughness reinforcing modification mode and can't weaken along with the reduction of envrionment temperature, on the contrary along with the reduction of temperature, the lifting amplitude of its impact property especially notched Izod impact strength is further obvious, show that the reinforced polypropylene compound material obtained by the technical program has excellent low-temperature impact-resistant performance, this provides good basis to it in the application of vehicle structure parts.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
The embodiment of the present invention is raw materials used:
PP-1: a rule co-polypropylene, crystallinity Xc >=92.0%, Shanghai company of China Petrochemical Industry, melting index 9g/min (230 DEG C, 2.16Kg).
PP-2: a rule co-polypropylene, crystallinity Xc >=98.5%, SK Chemical of Korea S, melting index 30g/min (230 DEG C, 2.16Kg).
Grafts compatilizer: glycidyl methacrylate GMA graft polypropylene compatilizer, chemical titration test percentage of grafting is 0.8.0%, self-control, by twin screw extruder, causes GMA/ vinylbenzene St mixture grafting molten state polypropylene by peroxide initiator and obtains.
Short glass fiber is short cuts felt: continuous glass fibre folded yarn is short cuts felt, diameter 13um, chopped length 4.5mm, Mount Taishan glass.
Olefin type elastomer: ethylene methyl methacrylate segmented copolymer, du pont company, melting index 0.5 (190 DEG C, 2.16Kg).
β type nucleator-1: substituted benzene amine nucleator TMB-5, Shanxi chemical institute, commercially available.
β type nucleator-2: carboxylic acid metal's salt nucleator HPN-68L, Belgian Milliken Co., commercially available.
Whisker-1: crystal whisker of hexa potassium titanate, K
2ti
6o
13, diameter 0.5 ~ 1.5um, length-to-diameter ratio 5 ~ 20, Shanghai Jia Chen novel material company, commercially available.
Whisker-2: magnesium salt whisker, NP-03, diameter < 1.0um, length-to-diameter ratio 30 ~ 40, Shanghai Chuan Zhu industrial corporation, commercially available.
Product performance are tested:
Tensile property: undertaken by ISO527-2 standard, test rate is 5mm/min.
Bending property: undertaken by ISO178 standard, span is 64mm, and test rate is 2mm/min.
Normal temperature and low temperature impact properties: carry out on impact tester for simple supported beam by ISO179-1 standard, batten is standard v-notch, and test environment temperature is respectively 23 DEG C ,-40 DEG C.
Cryogenic equipment impact property: undertaken by ISO6603-2 standard, probe temperature is-40 DEG C, test rate 2mm/s penetrating capacity 55J, the breach type produced after impacting by standard batten and energy absorption situation judge that the fracture mode of material is as brittle rupture or ductile rupture.
Crystalline structure and content analysis: adopt Wide angle X-ray diffraction analytical method, the XD-3A type x ray diffraction analysis x instrument of Japanese Shimadzu Corporation carries out, by the position of each characteristic peak and the content of calculated by peak area beta crystal.
Embodiment 1
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 11, be uniformly mixed, Compositional type nucleator-1 can be obtained.
Embodiment 2
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 12, be uniformly mixed, Compositional type nucleator-2 can be obtained.
Embodiment 3
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 13, be uniformly mixed, Compositional type nucleator-3 can be obtained.
Embodiment 4
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 14, be uniformly mixed, Compositional type nucleator-4 can be obtained.
Formula table (the unit: g) of table 1 Compositional type nucleator
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| β type nucleator-1 | 0.3 | 0.5 | 1 | |||
| β type nucleator-2 | 0.3 | 0.5 | 1 | |||
| Whisker-1 | 2 | 2 | 5 | 8 | 8 | |
| Whisker-2 | 5 |
Embodiment 5
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 15, be uniformly mixed, Compositional type nucleator-5 can be obtained.
Embodiment 6
Take β type nucleator-1, β type nucleator-2, whisker-1, whisker-2 according to the data of embodiment in table 16, be uniformly mixed, Compositional type nucleator-6 can be obtained.
Embodiment 7
Each component is taken by embodiment 7 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
The formula table of the glass fiber reinforced polypropylene composite material that table 2 high-impact is low temperature resistant (unit: gram)
Embodiment 8
Each component is taken by embodiment 8 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Embodiment 9
Each component is taken by embodiment 9 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Embodiment 10
Each component is taken by embodiment 10 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Embodiment 11
Each component is taken by embodiment 11 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Embodiment 12
Each component is taken by embodiment 12 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Comparative example 1
Each component is taken by comparative example 1 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
Comparative example 2
Each component is taken by comparative example 2 data shown in table 2, short for glass each component of cutting beyond felt is mixed with high-speed mixer, put in the main feeding bin of twin screw extruder, side feeding bin put into by the short felt of cutting of glass, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is set as 250 revs/min, each zone temperature (exporting from charging opening to head) of main barrel is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, through melt extruding, cooling, granulation, product is obtained after the operations such as drying and processing.
The performance of the glass fiber reinforced polypropylene composite material that table 3 high-impact is low temperature resistant and structured testing result
According to the performance test results of each embodiment shown in table 3, comparative example, and the different physical property formulas in associative list 1,2, use high crystallization copolymerization PP i.e. each embodiment of (PP-2) all to achieve good modified effect as embodiment 2,4,5, show that the enhancing of PP matrix crystallizing power contributes to playing the crystal formation regulating effect of Hybrid Nucleation Agent.And the Hybrid Nucleation Agent contrasting different sorts and consumption is further known, magnesium salt whisker collocation carboxylic metallic salt substituent has best effect, use the beta-crystalline form content in rear PP matrix from before modified be promoted to more than 60% less than 3%, and beta crystal promotes the key point of composite impact toughness just, especially in the environment of extreme low temperature (-40 DEG C even lower), conventional elastic body toughening pattern progressively loses effect, and the toughness of the β type well-crystallized of high-content, elongation at break, the advantages such as anti-notched Izod impact strength but can give full play to.Further Mechanics Performance Testing shows, compared with the comparative example 1,2 not using crystallization nucleating agent, the embodiment 4 employing specific aim nucleator has obviously more excellent normal temperature, the anti-notch shock performance of low temperature, its low temperature notched shock strength of-40 DEG C improves about one times especially, reaches 10.4kJ/m
2, and the test result of Instrumented impact test also shows, the nick break mode of its low temperature changes ductile rupture mode into from brittle failure mode, and the absorption of impact capacity to external world, dissipation capabilities are stronger.In addition, it should be noted that, the improvement of this toughness is not condition premised on the rigidity of sacrificing matrix material, contrary, material extending shown in embodiment 4, flexural strength has no obvious reduction, its property retention rate is all more than 90%, show that the glass fiber reinforced polypropylene composite material obtained by the technical program has high rigidity, high-impact, low temperature resistant characteristic, be particularly useful for automobile block framework, cooling fan of engine, skylight sash, structural part and the functional parts such as spare tyre cabinet frame, ensure that made component all have good performance in different temperature ranges.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that the present invention specifically implements to be confined to these explanations above-mentioned.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. the glass fiber reinforced polypropylene composite material that high-impact is low temperature resistant, is characterized in that: described matrix material, the weight percent of each composition as follows:
Polypropylene 50-80%
Grafts compatilizer 2-15%
Glass is short cuts felt 10-30%
Elastic body toughening agent 3-10%
Hybrid Nucleation Agent 0.5-10%
The weight percent sum of above-mentioned each composition is 100%, and wherein Hybrid Nucleation Agent is β type nucleator and whisker is composite forms.
2. the glass fiber reinforced polypropylene composite material that a kind of high-impact according to claim 1 is low temperature resistant, it is characterized in that: described polypropylene advises the one of co-polypropylene or mixture of more than two kinds between being, fusing point is between 220-275 DEG C, molding shrinkage is between 1.0-1.5,230 DEG C, under the test condition of 2.16Kg, its melting index is 3-20 g/min.
3. the glass fiber reinforced polypropylene composite material that a kind of high-impact according to claim 1 is low temperature resistant, it is characterized in that: described grafts compatilizer is glycidyl methacrylate GMA graft polypropylene compatilizer, its percentage of grafting is 0.5-2% through chemical titration test, by twin screw extruder, cause GMA/ vinylbenzene St mixture grafting molten state polypropylene by peroxide initiator and obtain.
4. the glass fiber reinforced polypropylene composite material that a kind of high-impact according to claim 1 is low temperature resistant, is characterized in that: described short glass fiber is short, and to cut felt be that continuous glass fibre folded yarn is short cuts rear gained, and its filament diameter is 13um, and chopped length is 3-4.5mm.
5. the glass fiber reinforced polypropylene composite material that a kind of high-impact according to claim 1 is low temperature resistant, is characterized in that: described elastic body toughening agent is olefin type elastomer POE, and its density is 0.860-0.880g/cm
3, fusing point is between 55-70 DEG C, and shore hardness (A) is at 68-83, and modulus in flexure is 12-28Mpa, 190 DEG C, under the test condition of 2.16Kg, its melting index is 0.5 ~ 10 g/min.
6. the glass fiber reinforced polypropylene composite material that a kind of high-impact according to claim 1 is low temperature resistant, it is characterized in that: Hybrid Nucleation Agent is that β type nucleator and whisker form in the ratio of 1:6 ~ 1:10 is composite, wherein said β type nucleator be carboxylic acid metal's salt nucleator, the one of substituted benzene amides nucleator, rare earth compounding nucleator or two or more mix;
Described whisker is potassium titanate crystal whisker, the one of magnesium salt whisker, aluminium borate whisker or two or more mix.
7. the method for the glass fiber reinforced polypropylene composite material that high-impact according to claim 1 is low temperature resistant, is characterized in that, described method comprises the following steps:
A, take polypropylene, grafts compatilizer, elastic body toughening agent, Hybrid Nucleation Agent and processing aid by described weight percent, mix, obtain mixing raw material;
B, dried mixing raw material is positioned in the main feeding bin of tight meshing co rotating twin screw extrusion, join in the machine barrel of forcing machine through feed screw, short for glass felt of cutting is joined forcing machine from side spout, extruder screw diameter is 35mm, length-to-diameter ratio L/D is 40, engine speed is 250 revs/min, through melt extruding, cooling, granulation, obtains product after the operation such as drying and processing.
8. a kind of method preparing the low temperature resistant glass fiber reinforced polypropylene composite material of high-impact according to claim 7, is characterized in that: in raw material, the weight percent of each composition is the polypropylene of 20-80%, the glass of the grafts compatilizer of 2-15%, 10-30% is short cuts felt, the elastic body toughening agent of 3-10%, the Hybrid Nucleation Agent of 0.5-10% and the processing aid of 0.2-1.0%;
In main barrel, from charging opening to head, each zone temperature of outlet is set as: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C.
9. a kind of method preparing the low temperature resistant glass fiber reinforced polypropylene composite material of high-impact according to claim 7, it is characterized in that: described polypropylene is the one of co-polypropylene or mixture of more than two kinds, fusing point is between 220-275 DEG C, molding shrinkage is between 1.0-1.5,230 DEG C, under the test condition of 2.16Kg, its melting index is 3-20 g/min; Described elastic body toughening agent is olefin type elastomer POE, and its density is 0.860-0.880g/cm
3, fusing point is between 55-70 DEG C, and shore hardness (A) is at 68-83, and modulus in flexure is 12-28Mpa, 190 DEG C, under the test condition of 2.16Kg, its melting index is 0.5 ~ 10 g/min.
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| CN110878159A (en) * | 2019-11-14 | 2020-03-13 | 中广核俊尔（上海）新材料有限公司 | Low-density polypropylene composite material and preparation method thereof |
| CN113999454A (en) * | 2021-11-09 | 2022-02-01 | 清华大学 | High-toughness polypropylene composite material capable of inhibiting space charge and preparation method thereof |
| CN114752143A (en) * | 2022-03-16 | 2022-07-15 | 成都金发科技新材料有限公司 | Low-friction abnormal-sound filled polypropylene material and preparation method and application thereof |
| CN117511110A (en) * | 2023-11-09 | 2024-02-06 | 山东方特管业有限公司 | Polypropylene composite material for cable sheath and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108586942A (en) * | 2018-04-09 | 2018-09-28 | 广东聚石化学股份有限公司 | Low temperature resistant anlistatig glass fiber reinforced polypropylene material of one kind and preparation method thereof |
| CN110878159A (en) * | 2019-11-14 | 2020-03-13 | 中广核俊尔（上海）新材料有限公司 | Low-density polypropylene composite material and preparation method thereof |
| CN113999454A (en) * | 2021-11-09 | 2022-02-01 | 清华大学 | High-toughness polypropylene composite material capable of inhibiting space charge and preparation method thereof |
| CN114752143A (en) * | 2022-03-16 | 2022-07-15 | 成都金发科技新材料有限公司 | Low-friction abnormal-sound filled polypropylene material and preparation method and application thereof |
| CN114752143B (en) * | 2022-03-16 | 2023-06-06 | 成都金发科技新材料有限公司 | Low-friction abnormal sound filling polypropylene material and preparation method and application thereof |
| CN117511110A (en) * | 2023-11-09 | 2024-02-06 | 山东方特管业有限公司 | Polypropylene composite material for cable sheath and preparation method thereof |
| CN117511110B (en) * | 2023-11-09 | 2024-05-10 | 山东方特管业有限公司 | Polypropylene composite material for cable sheath and preparation method thereof |
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